High pressure steam ironing machine with automatic control of heating and water addition

ABSTRACT

A high pressure steam ironing machine with automatic heating and water addition controlling is provided. The ironing machine includes a housing, a bracket, an air release valve, a pressure chamber, an ironing board, a dual water and pressure control assembly and a water pump. The pressure chamber includes an upper cover and a lower seat. The upper cover and the lower seat are fixedly connected. The upper cover is provided with a steam outlet, a water inlet port, a steam inlet and a water and pressure control valve port, and the lower seat is provided with an electric heating pipe. The ironing board is connected to the lower seat, and the water outlet of the water pump is connected to the water inlet port. The air release valve assembly is connected with the steam outlet port and the steam inlet port.

CROSS-REFERENCE TO RELATED APPLICATIONS

The application claims priority to Chinese patent application No.202110700887.5, filed on Jun. 22, 2021, the entire contents of which areincorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to small household electrical appliances,and more specifically, to a high pressure steam ironing machine withautomatic control of heating and water addition.

BACKGROUND

An iron is one of the most commonly used household appliances in moderntimes to iron clothes. Similar products on the market, such as hand-heldsteam irons, usually adopt open-type heating, which has the disadvantagethat there is no pressure chamber and no pressure.

SUMMARY

It is an object of the present invention to provide a high pressuresteam ironing machine that automatically controls heating and wateraddition in order to solve the above-mentioned problems proposed in thebackground art.

To achieve the above objective, the present disclosure providestechnical schemes as follows.

A high pressure steam ironing machine with automatic heat and wateraddition controlling is provided. The ironing machine includes ahousing, a bracket, an air release valve, a pressure chamber, an ironingboard, a dual water and pressure control assembly, and a water pump. Thepressure chamber is arranged under the bracket. The pressure chambercomprises an upper cover and a lower seat. The upper cover and the lowerseat are fixedly connected. The upper cover is provided with a steamoutlet, a water inlet port, a steam inlet and a water and pressurecontrol valve port. The lower seat is provided with an electric heatingpipe. The bottom of the lower seat is connected with a double-convexself-resetting thermostat. The ironing board is connected to the lowerseat.

The water outlet of the water pump is connected with the water inletport. The air release valve assembly is connected with the steam outletport and the steam inlet port. The dual water and pressure controlassembly includes a microswitch, a pressure push rod and a pressurevalve. The inlet of the pressure valve is connected with a water andpressure control valve port. The pressure push rod is connected with avalve core of the pressure valve. The microswitch is provided at oneside of the pressure push rod, and both the microswitch and the waterpump are connected to a circuit board.

As a further scheme of the present disclosure, the air release valveassembly includes an air release valve and a valve button. The airrelease valve is provided with a steam inlet, a steam outlet, a pushrod, a piston and a compression spring. The steam inlet and the steamoutlet are respectively connected with the steam outlet port and thesteam inlet port. The pressure spring and the push rod are respectivelyprovided at two sides of the piston, and the valve button is provided atone side of the push rod.

As a further scheme of the present disclosure, a silicone gasket forsealing is provided between the upper cover and the lower seat. Thesilicone gasket is provided with a water inlet nozzle and a waterpassage end through hole, and the water inlet nozzle is connected withthe water inlet port.

As a further scheme of the present disclosure, the ironing machinefurther includes a pressure relief valve assembly. The upper cover isprovided with an abnormal pressure relief interface, and the pressurerelief valve assembly is connected with the abnormal pressure reliefinterface.

As a further scheme of the disclosure, a sealing gasket is arrangedbetween the ironing plate and the lower seat.

As a further scheme of the present disclosure, the housing is providedwith a handle.

As a further scheme of the present disclosure, the ironing machinefurther includes a water tank connected at one side of the bracket, anda water inlet of the water pump is connected to the water tank.

Compared with the prior art, advantageous effects of the presentdisclosure are:

By providing a heatable pressure chamber, the high-pressure steam with30-40 KPa can be generated. The heating, generation and termination ofthe steam can be automatically controlled, thereby ensuring safety andhigh efficiency;

A preheat time is short, the steam is generated immediately. The wateris not completely boiled and is automatically fed and the steam isgenerated automatically without waste and saving energy.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is an exploded view of the structure of the present disclosure.

FIG. 2 is a structural diagram of a pressure chamber in the presentdisclosure.

FIG. 3 is a structural diagram of the upper cover of the pressurechamber in the present disclosure.

FIG. 4 is a structural diagram of the lower seat of the pressure chamberin the present disclosure.

FIG. 5 is a structural diagram of the air release valve assembly in thepresent disclosure.

FIG. 6 is a schematic structural diagram of the dual water and pressurecontrol assembly in the present disclosure.

FIG. 7 is a schematic diagram of the structure of the presentdisclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Technical solutions in the embodiments of the present disclosure will beclearly and completely described with reference to the accompanyingdrawings in the following. It is obvious that the described embodimentsare only a part of the embodiments of the present disclosure, but notall of the embodiments. Based on the embodiments of the presentdisclosure, all other embodiments obtained by the ordinary personskilled in the art without creative efforts fall within the scope ofprotection of the present disclosure.

Referring to FIGS. 1-4 , in the embodiments of the present disclosure, ahigh-pressure steam ironing machine with automatic control of heat andwater addition is provided. The ironing machine includes a housing 1, abracket 2 made of electric wood, an air release valve 3, a pressurechamber 4, an ironing board 6 made of aluminum, a dual water andpressure control assembly 7, a water pump 8, a water tank 9 and apressure relief valve assembly 10. The housing 1 is provided with ahandle 11. The water tank 9 is connected to one side of the bracket 2,and the pressure chamber 4 is provided below the bracket 2. The pressurechamber 4 includes an upper cover 41 and a lower seat 43 made ofdie-cast aluminum and a silicone gasket 42 for sealing between the uppercover 41 and the lower seat 43. The upper cover 41 and the lower seat 43are fixedly connected by screws. The upper cover 41 is provided with asteam outlet port 411, an abnormal pressure relief interface 412, awater inlet port 413, a steam inlet port 414 and a water and pressurecontrol valve port 415. The silicone gasket 42 is provided with a waterinlet nozzle 421 and a water passage end through hole 422. The waterinlet nozzle 421 is connected to the water inlet port 413 through arubber hose. An electric heating pipe 432 is arranged in the lower seat43. A double-convex self-resetting thermostat 431 is connected to thebottom of the lower seat 43. The silicone gasket 42 isolates the lowercavity into a closed water path to form high temperature and highpressure steam. In the end position of the water path, the steam entersinto the upper cavity through the end through hole 422 of the waterpath. The steam is completely vaporized while relatively dry steamenters the upper cavity. The defect that the machine cannot be heateddue to the use of the machine in the state of large angle inclination isalso avoided. The ironing board 6 is connected to the lower seat 43, anda sealing gasket 5 is arranged between the ironing board 6 and the lowerseat 43 for sealing.

As shown in FIG. 5 , the pressure relief valve assembly 10 and theabnormal pressure relief interface 412 are connected for safe pressurerelief in the case of abnormal high pressure. The water outlet of thewater pump 8 is connected to the water inlet port 413. The water inletof the water pump 8 is connected to the water tank 9. The air releasevalve assembly 3 includes an air release valve and a valve button 31.The air release valve is provided with an inlet port, an outlet port, apush rod 32, a piston 33 and a compression spring 34. The steam inletport and the steam outlet port are respectively connected with the steamoutlet port 411 and the steam inlet port 414. The compression spring 34and the push rod 32 are respectively located at two sides of the piston33. The valve button 31 is located at one side of the push rod 32. Thepiston 33 blocks the gas port when no steam is discharged under normalconditions. The valve button 31 is pressed, and the piston 33 is pushedby the push rod 32 to conduct the steam hole, and the steam is dustprooffrom the steam outlet and enters the ironing board 6.

As shown in FIG. 6 , the dual water and pressure control assembly 7includes two groups of microswitches 71, a pressure push rod 72 and agroup of pressure valves 73. The inlets of the pressure valves 73 areconnected to a water and pressure control valve interface 415 through agas pipe. The pressure push rod 72 is connected to the valve core of thepressure valve 73. The microswitch 71 is provided on one side of thepressure push rod 72 and the contact of the microswitch 71 is in contactwith the pressure push rod 72. Both the microswitch 71 and the waterpump 8 are connected to the circuit board 81. When the air pressurereaches the set high level, the valve pushes the microswitch 71 to turnoff through the pressure push rod 72. The circuit board 81 receives thesignal and controls the water pump 8 to stop supplying water. Thetemperature in the pressure chamber 4 rises and the temperaturecontroller trips when it reaches the temperature control point, and theheating is stopped. In the same way, when the air pressure is lower to aset low level, the pressure push rod 72 is returned, the microswitch 71is reset and closed. The circuit board 81 controls the water pump 8 tostart water supplying, In the meantime, the temperature in the cavity isreduced, when the temperature controller is turned on to the temperaturecontrol point, the heating is recovered, and steam is generated, Inaddition, a dual water control and pressure control structure isadopted, so that two microswitches are combined with two pressure pushrods. A step difference of 0.5 bar can be designed, after the firstgroup is operated, since the inertial air pressure will continue to riseto a certain extent, the second group of push rods push the microswitchto turn off the water pump and the heating circuit. The temperaturecontroller as a dual protection to control the pressure of thehigh-pressure chamber to not exceed the preset value.

In case of failure of the dual pressure control water and pressurecontrol assembly and the pressure reaches the set 5.0 bar, the thirdvent is connected to the external safety (abnormal) relief valveassembly and starts to leak to ensure a pressure safety.

As shown in FIG. 7 , the working principle of the present disclosure isas follows. After the machine is powered on, the start button is pressedto enter into a working mode, at this time, the cavity of the pressurechamber 4 enters into an automatic heating state. After the temperaturereaches the set value, the temperature controller is automaticallyswitched off, the heating is stopped, and the electric control programsimultaneously switch on the switch of the water pump 8 to supply waterto the cavity of the high-pressure chamber to generate high-temperatureand high-pressure steam. With the water being supplied, the temperatureof the electric heating pipe 432 is reduced and the temperaturecontroller is reset. When the steam pressure reaches the preset pressureof 2.5 bar, the pressure push rod 72 of the dual water and pressurecontrol assembly operates to cut off the water supply from the waterpump 8. The electric heating pipe 432 continues to heat. If the steampressure in the cavity reach the preset value (3.5-4.0 bar), thepressure push rod 72 of the dual water and pressure control assemblyoperates to cut off the electric circuit of the electric heating pipe432 and stop heating. At the same time, the power supply of the waterpump 8 is additionally cut off to ensure water cut-off of the water pumpby double measures. The bottom temperature of the electric heating pipe432 continues to rise, and when the bottom temperature reaches thepreset temperature of the temperature controller, the temperaturecontroller is switched off. The heating circuit of the heating disk isalso cut off, and the dual water and pressure control assembly and thetemperature controller serve as dual protection to control the pressureof the high pressure chamber not to exceed a preset value.

The user turns on the steam release switch during the use.

A, the pressure in the chamber is gradually reduced, when the pressureis lower than the set value of 3.5 bar, the pressure push rod 72 of thedual water and pressure control assembly is reset, and the circuit isconnected. If the temperature controller is reset, the electric heatingpipe 432 starts to heat up, and the steam continues to release. When thepressure is lower than the set value of 2.5 bar, the pressure push rod72 is reset, the water pump 8 is turned on, and the chamber continues togenerate steam.

In addition, when the pressure in the cavity starts to decrease, thetemperature at the bottom of the electric heating pipe 432 alsodecreases. When the temperature decreases to the set value, thetemperature controller automatically closes. If the pressure push rod 72is reset, and the circuit is turned on, the electric heating pipe 432starts to heat and the cavity continues to generate steam (generally,the electric heating pipe 432 is reset earlier than the pressure pushrod 72 is reset).

In case of failure of the dual water and pressure control assembly, andthe pressure reaches the set 5.0 bar, the external safety (abnormal)pressure relief valve assembly connected to the second vent interfacewill start to leak to ensure pressure safety.

The dual water and pressure control assembly includes a double-headedpressure control valve, a pair of microswitches, a water pump circuitand the like. The microswitch 71 closes the circuit of the water pump 8,thereby cutting off the water supply. If the user releases steam, themicroswitch 71 is turned on as the air pressure in the chamberdecreases, turning it back on to the water supply mode.

During the operation, through the selection of three parameters of waterflow rate, power and temperature controller, the water supplied are allturned into steam without waste, thus saving the energy. At the sametime, the effect of high-pressure steam is achieved.

It will be apparent to those skilled in the art that the presentdisclosure is not limited to the details of the above-describedexemplary embodiments, and the present disclosure can be embodied inother specific forms without departing from the spirit or essentialcharacteristics of the present disclosure. Accordingly, the embodimentsshould be considered exemplary and non-limiting in all respects. Thescope of the disclosure is defined by the appended claims rather thanthe foregoing description. It is therefore intended that all variationsfalling within the meaning and scope of the equivalents of the claims beencompassed within the present invention. Any reference signs in theclaims should not be taken as limiting the claims to which they relate.

In addition, it should be understood that although the specification isdescribed in terms of embodiments, not each embodiment contains only oneindependent technical solution, and that the description is describedonly for the sake of clarity, those skilled in the art should take thedescription as a whole, and the technical solutions in the embodimentsmay be appropriately combined to form other embodiments that can beunderstood by those skilled in the art.

What is claimed is:
 1. A high pressure steam ironing machine withautomatically control of heating and water addition, comprising: ahousing (1), a bracket (2), an air release valve (3), a pressure chamber(4), an ironing board (6), a dual water and pressure control assembly(7), a water pump (8); the pressure chamber (4) is provided under thebracket (2); the pressure chamber (4) comprises an upper cover (41) anda lower seat (43); the upper cover (41) and the lower seat (43) arefixedly connected; the upper cover (41) is provided with a steam outletport (411), a water inlet port (413), a steam inlet port (414) and awater and pressure control valve port (415); the bottom of the lowerseat (43) is connected with a double-convex self-resetting thermostat(431), and the ironing board (6) is connected with the lower seat (43);a water outlet of the water pump (8) is connected with the water inletport (413); the air release valve assembly (3) is connected with thesteam outlet port (411) and the steam inlet port (414); the dual waterand pressure control assembly (7) comprises a microswitch (71), apressure push rod (72) and a pressure valve (73); the inlet of thepressure valve (73) is connected to a water and pressure control valveinterface (415); the pressure push rod (72) is connected to a valve coreof the pressure valve (73), and the microswitch (71) is provided at oneside of the pressure push rod (72); the microswitch (71) and the waterpump (8) are both connected to the circuit board (81).
 2. The ironingmachine of claim 1, wherein the air release valve assembly (3) comprisesan air release valve and a valve button (31); the air release valve isprovided with a steam inlet, a steam outlet, a push rod (32), a piston(33) and a compression spring (34); the steam inlet and the steam outletare respectively connected with the steam outlet port (411) and thesteam inlet port (414); the pressure spring (34) and the push rod (32)are respectively provided at two sides of the piston (33); and the valvebutton (31) is provided on one side of the push rod (32).
 3. The ironingmachine of claim 1, wherein a silicone gasket (42) for sealing isprovided between the upper cover (41) and the lower seat (43); thesilicone gasket (42) is provided with a water inlet nozzle (421) and awater passage end through hole (422); and the water inlet nozzle (421)is connected with the water inlet port (413).
 4. The ironing machine ofclaim 1, further comprising a pressure relief valve assembly (10), anabnormal pressure relief interface (412) is arranged on the upper cover(41); the pressure relief valve assembly (10) is connected to theabnormal pressure relief interface (412).
 5. The ironing machine ofclaim 1, wherein a sealing gasket (5) is arranged between the ironingboard (6) and the lower seat (43).
 6. The ironing machine of claim 1,wherein a handle (11) is provided on the housing (1).
 7. The ironingmachine of claim 1, further comprising a water tank (9) connected to oneside of the bracket (2); wherein the water inlet of the water pump (8)is connected to the water tank (9).